Yusoff, Mohd Hamizi and Azmi, Mohamad Nurul and Hussin, Mohd Hazwan and Osman, Hasnah and Raja, Pandian Bothi and Rahim, Afidah Abdul and Awang, Khalijah (2020) An electrochemical evaluation of synthesized coumarin-Azo dyes as potential corrosion inhibitors for mild steel in 1 M HCl medium. International Journal of Electrochemical Science, 15 (12). pp. 11742-11756. ISSN 1452-3981, DOI https://doi.org/10.20964/2020.12.43.
Full text not available from this repository.Abstract
The anti corrosion properties of mild steel were studied in 1.0 M HCl medium with azo-coumarin dyes inhibitor by electrochemical impedance and potentiodynamic polarization measurements. The azo-coumarin dyes 8-10 were synthesized by coupling reaction between diazonium salt of aniline derivatives with 4-hydroxycoumarin under basic condition. The result showed that inhibition efficiency was found to increase (shown average IE > 80%), with increasing the concentration of azocoumarin dyes, and their adsorption over mild steel surface found to obey Langmuir adsorption isotherm. Furthermore, the Langmuir adsorption isotherm parameters made evident that corrosion inhibition proceeds through physisorption mode of interaction. After corrosion evaluation, mild steel's surface morphology was screened via SEM - EDX analysis which showed an improved surface in the presence of azo-coumarin dye derivatives.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Corrosion inhibitor; Azo-coumarin dyes; Mild steel; Electrochemical impedance |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Nov 2023 07:22 |
| Last Modified: | 29 Nov 2023 07:22 |
| URI: | http://eprints.um.edu.my/id/eprint/36250 |
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